I have a lamp with the following known specs:
p = V x I, I expect the required input voltage to be 4.8V AC.
However, this seems to be an unusual input voltage for a lamp. For context: this is a MR-16 style quartz (possibly halogen) bulb, listed as part number 21127 here.
The only specs given for this lamp are watts and amps, above, so I cannot confirm voltage via their documentation. The typical application of this bulb is part of a significantly more complex circuit involving a constant current regulator.
I have tried looking for a 120V AC --> 4.8V AC 6.6A transformer without success.
- Is finding a transformer outputting 4.8V AC at 6.6A actually the simplest way to power this bulb? What alternatives exist?
- Could the transformer output DC instead of AC without harming the bulb?
- What are the consequences to the bulb of using a transformer which outputs a more standard 6V or 12V?
- What are the consequences to the bulb of using a transformer which outputs less than 4.8V?
My guess is exceeding 4.8 volts would cause the bulb to burn out faster, whereas less than 4.8 volts would cause the bulb to emit less light (but would this be harmful to the transformer?). I also expect transformers outputting either DC or AC could be used.
Thank you for your guidance.